<template>
  <div style="width: 100%; height: 100vh; background-color: aquamarine; overflow: hidden">
    <div style="width: 400px; margin: 150px auto">
      <div style="color: #4169E1; font-size: 30px; text-align: center; padding: 30px 0">欢迎登录</div>
      <el-form ref="form" :model="form" size="normal" :rules="rules">
        <el-form-item prop="username">
          <el-input prefix-icon="Avatar" v-model="form.username" placeholder="请输入账号"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input prefix-icon="Lock" v-model="form.password" show-password placeholder="请输入密码"></el-input>
        </el-form-item>
        <el-form-item>
          <div style="display: flex">
            <el-input prefix-icon="Key" v-model="form.validCode" style="width: 50%;" placeholder="请输入验证码"></el-input>
            <ValidCode @input="createValidCode" />
          </div>
        </el-form-item>
<!--        <el-form-item>-->
<!--          <el-radio v-model="form.role" :label="1" style="color: white">管理员</el-radio>-->
<!--          <el-radio v-model="form.role" :label="2" style="color: white">普通用户</el-radio>-->
<!--        </el-form-item>-->
        <el-form-item>
          <el-button style="width: 100%" type="primary" @click="login">登录</el-button>
        </el-form-item>
        <el-form-item><el-button type="text" @click="$router.push('/register')">前往注册 >> </el-button></el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import request from "@/utils/request";
import ValidCode from "@/components/ValidCode";

export default {
  name: "Login",
  components:{
    ValidCode
  },
  data(){
    return{
      form:{},
      //登录校验
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
        ]
      }
    }
  },
  methods:{
    // 接收验证码组件提交的 4位验证码
    createValidCode(data) {
      this.validCode = data
    },
    login(){
      this.$refs['form'].validate((valid) =>{
        if (valid){
          if (!this.form.validCode) {
            this.$message.error("请填写验证码")
            return
          }
          if(this.form.validCode.toLowerCase() !== this.validCode.toLowerCase()) {
            this.$message.error("验证码错误")
            return
          }
          request.post("/user/login",this.form).then(res=>{
            if (res.code === '0'){
              this.$message({
                type: "success",
                message: "登录成功"
              })
              sessionStorage.setItem("user",JSON.stringify(res.data)) // 用户登录成功后将用户信息缓存到session
              let role = JSON.parse(sessionStorage.getItem("user"))["role"]
              if (role === '1') {
                this.$router.push("/user") //登录成功之后进行页面的跳转，跳转到主页
              }else{
                this.$router.push("/book")
              }
            } else {
              this.$message({
                type: "error",
                message: res.msg
              })
            }
          })
        }
      })
    }
  }
}
</script>

<style scoped>

</style>